Now to the cost thing. Basically the issue is once people get into it, people are willing to dish out money for better equipment and the equipment war goes on. I saw this episode of Top Gear about how they run weekend racing at Finland and i think we might be able to use this strategy in some budget classes. Basically they have a rule stating anyone can buy anyone else's car for $2000 and they have to sell it if requested.
We can use this for our low budget orientated class to make it truly low budget and new comer friendly. maybe set a basic motor, layout, weight, body rule like another class and add in the must sell if requested rule. Maybe $200 for roller and $200 for all the electronics on the car minus receiver and transponder. Maybe also a rule stating new comer are immune to must sell for 4 month in case they just bought a set of new equipments to start our etc. Then add a how many sets of tire per season rule and you got a pretty level playing field equipment wise. This way lower class will be more about tuning and driving than buying the best stuff out there and blaming equipments for not wining.